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TraceFast Internal Transfers by Address
x402
TraceFast Internal Transfers by Address is a paid API for AI agents from mpp.tracefast.xyz, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-19).
Returns paginated internal call frames (value-carrying subcalls) sent or received by an Ethereum address, ordered newest first with call tree position, depth, call type, value moved, and outcome.
Price / call$0.1
Success—
StatusUnknown
How this service works
TraceFast live Ethereum data: the value-carrying call frames an address sent or received inside transactions, newest first — each with its position in the call tree, its depth, the kind of call, the value it moved and its own outcome. Path address: The address, `0x`-prefixed, 40 hex characters, any case. Query: limit, cursor, direction, fromBlock, toBlock (see docs). Docs: https://docs.tracefast.xyz/api/entity-internal-transfers.md
Output
A paginated list of internal call frames where the given address was caller or callee, each including its position in the call tree, depth level, call type (e.g. CALL, DELEGATECALL), ETH value moved, and the outcome of that call. Results are ordered newest first and include a cursor for fetching the next page.
Example use cases
DeFi protocol cash flow audit
“Show me all internal ETH transfers sent or received by 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 between block 19000000 and 19100000 — I want to see the call depth, call type, and value for each one.”
Suspicious contract activity investigation
“Get the last 25 internal transfers for 0xBE0eB53F46cd790Cd13851d5EFf43D12404d33E8 newest first — I'm trying to see what subcalls it's been making and what ETH values were moving.”
Wallet internal income tracking
“List all internal transfers received by 0xAbCd1234567890abcdef1234567890abcdef1234 with a limit of 100, so I can track which contracts have been sending it ETH through internal calls.”
Technical details
Endpoint
GEThttps://mpp.tracefast.xyz/api/v1/chains/1/entities/:address/internal-transfers?utm_source=zero.xyzWhen to prefer
Use this endpoint when you specifically need internal call frame data — ETH value movements through subcalls within transactions — for a given Ethereum address. This is distinct from top-level transaction history and is ideal for auditing DeFi protocol flows, investigating contract behavior, or tracing ETH moving through complex call stacks. Prefer this over general transaction endpoints when the value you care about is transferred internally (not as a top-level tx value).
Side effects
- Invalid address format (not 0x-prefixed or not 40 hex chars) returns 400 error
- Address with no internal transfer history returns empty result set
- Block range parameters out of order or referencing future blocks may return error or empty results
- Invalid cursor value returns pagination error
- Rate limit or payment failure returns 402 or 429 error
- Requesting more than the maximum allowed limit per page returns validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | — |
Tags
x402
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